The firewall has 5060 and 10000-20000 open to the SIP provider (voip.ms), and a static NAT to the FreePBX server but we are getting some set of calls with no audio on either end. Anyone have any ideas ...

Firewalls have been on the front lines of network security for 25 years. Over time they’ve evolved beyond simple packet filtering to take on a wider and deeper variety of tasks to block modern threats ...

Fortinet is embarking on a mission for some of its firewalls and other products and those of third-party vendors to work together to boost security across core networks, remote devices and the cloud.